ISO New England
Balancing Authority Summary Information
ISO New England is ranked #15 out of 64 balancing authorities in terms of total annual electricity generation.
| Balancing Authority | ISO New England |
|---|---|
| States | Connecticut Maine Massachusetts New Hampshire New York Rhode Island Vermont |
| Last Update | Jul 2026 |
| Annual Generation | 111.1 TWh |
| Power Plants | 1,629 |
| Utilities | 833 |
| Ranked #15 out of 64 in terms of net annual generation | |
| Ranked #10 out of 53 in terms of annual generation from natural gas | |
| Power Plant Types | Natural Gas | 54.9% Nuclear | 25% Wind | 5.1% Water | 4.5% Other Fuel | 4.4% Solar | 1.6% Coal | 0.1% |
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Daily Net Generation for ISO New England for the past 3 Years
| Plant Name | Utility | Location | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|
| Athens AT01 | Nautilus Solar Solutions | Athens, ME | 7 GWh | May 2022 | Dec 2025 | Solar |
| MEVS DOT 109 | MEVS DOT, LLC | Augusta, ME | 4 GWh | Jun 2023 | Dec 2025 | Solar |
| CVEC Round 4 Brewster Captn Golf Course | Freemans Way Solar Project 2019, LLC | Brewster, MA | 1 GWh | Feb 2022 | Dec 2025 | Solar |
| Norcap South | LSE Coma Berenices LLC | East Windsor, CT | 4 GWh | Nov 2017 | Dec 2025 | Solar |
| Sidney | Nautilus Solar Solutions | Sidney, ME | 2 GWh | Apr 2023 | Dec 2025 | Solar |
| Standish | Nautilus Solar Solutions | Standish, ME | 7 GWh | Sep 2023 | Dec 2025 | Solar |
| Town House | Nautilus Solar Solutions | Chelsea, ME | 8 GWh | Nov 2022 | Dec 2025 | Solar |
| Washington WS01 | Nautilus Solar Solutions | Washington, ME | 5 GWh | May 2022 | Dec 2025 | Solar |
| Wells (ME) | Nautilus Solar Solutions | Wells, ME | 8 GWh | Jun 2022 | Dec 2025 | Solar |
| ME-EDFR-Phase I-Woolwich | Green Mile Solar, LLC | Woolwich, ME | 8 GWh | Aug 2023 | Dec 2025 | Solar |
| ME-EDFR-Phase I-Embden | Tower Solar Partners, LLC | Embden, ME | 8 GWh | Nov 2023 | Dec 2025 | Solar |
| Park Solar | Ecos Energy LLC | Woodbridge, CT | 1 GWh | Nov 2023 | Dec 2025 | Solar |
| Caterpillar Hill | AES Clean Energy | Sedgwick, ME | 9 GWh | Nov 2023 | Dec 2025 | Solar |
| Freetown MA 1, LLC | Navisun LLC | Freetown, MA | 2 GWh | Nov 2022 | Dec 2025 | Solar |
| OSG Solar 1 LLC | Navisun LLC | Orange, MA | 3 GWh | Jun 2012 | Dec 2025 | Solar |
| Seaboard Charlton, LLC | Navisun LLC | Charlton, MA | 3 GWh | Nov 2020 | Dec 2025 | Solar |
| Seaboard Oxford, LLC | Navisun LLC | Oxford, MA | 3 GWh | Jul 2020 | Dec 2025 | Solar |
| Seaboard Sheffield, LLC | Navisun LLC | Sheffield, MA | 2 GWh | Mar 2021 | Dec 2025 | Solar |
| BWC Beech Ridge Brook, LLC | Navisun LLC | Scarborough, ME | 8 GWh | Apr 2023 | Dec 2025 | Solar |
| BWC Rams Horn Channel LLC | Navisun LLC | Beverly, MA | 6 GWh | Nov 2020 | Dec 2025 | Solar |
| Douglas Pike Solar, LLC | Navisun LLC | Burrillville, RI | 3 GWh | May 2023 | Dec 2025 | Solar |
| Farmingdale FA01 | Nautilus Solar Solutions | Farmingdale, ME | 8 GWh | May 2022 | Dec 2025 | Solar |
| Fryeburg | Nautilus Solar Solutions | Fryeburg, ME | 9 GWh | Apr 2023 | Dec 2025 | Solar |
| Mechanic Street (CSG) | Nautilus Solar Solutions | Presque Island, ME | 4 GWh | Nov 2024 | Dec 2025 | Solar |
| Missile Street (CSG) | Nautilus Solar Solutions | Presque Island, ME | 4 GWh | Nov 2024 | Dec 2025 | Solar |
| North Bridgton | Nautilus Solar Solutions | Oakland, ME | 8 GWh | Oct 2022 | Dec 2025 | Solar |
| Mainely Solar (Wyman Hill Solar LLC) | Wyman Hill Solar, LLC | Rumford, ME | 6 GWh | Nov 2022 | Dec 2025 | Solar |
| Clemons Road Solar | RPNY Solar 4, LLC | Minoa, NY | 4 GWh | Jun 2024 | Dec 2025 | Solar |
| Pike Road Solar (NY) | RPNY Solar 6, LLC | Batavia, NY | 5 GWh | Jun 2024 | Dec 2025 | Solar |
| Alexander Road Solar | RPNY Solar 7, LLC | Batavia, NY | 3 GWh | Jun 2024 | Dec 2025 | Solar |
| Exeter Ten (CSG) | Nautilus Solar Solutions | Exeter, RI | 5 GWh | Nov 2024 | Dec 2025 | Solar |
| Exeter Mail CSG | Nautilus Solar Solutions | Exeter, RI | 9 GWh | Dec 2024 | Dec 2025 | Solar |
| Exeter Renewables 1 | AES Clean Energy | Exeter, RI | 16 GWh | Nov 2024 | Dec 2025 | Solar |
| Platt Hill | LSE Pictor LLC | Winchester, CT | 3 GWh | Dec 2021 | Dec 2025 | Solar |
| BNRG Masardis (CSG) | Nautilus Solar Solutions | Masardis, ME | 4 GWh | Nov 2024 | Dec 2025 | Solar |
| BRNG Nicolin (CSG) | Nautilus Solar Solutions | Ellsworth, ME | 6 GWh | Nov 2024 | Dec 2025 | Solar |
| BNRG Norridgewock (CSG) | Nautilus Solar Solutions | Norridgewock, ME | 3 GWh | Oct 2024 | Dec 2025 | Solar |
| BNRG North Anson (CSG) | Nautilus Solar Solutions | North Anson, ME | 3 GWh | Oct 2024 | Dec 2025 | Solar |
| Oakland | Nautilus Solar Solutions | Oakland, ME | 9 GWh | Aug 2022 | Dec 2025 | Solar |
| Pomham Islander (CSG) | Nautilus Solar Solutions | North Smithfield, RI | 1 GWh | Jun 2025 | Dec 2025 | Solar |
| Quarry | Nautilus Solar Solutions | North Berwick, ME | 10 GWh | Nov 2022 | Dec 2025 | Solar |
| Ryans Ranch | Nautilus Solar Solutions | Paris, ME | 5 GWh | May 2022 | Dec 2025 | Solar |
| Sabattus SB01 | Nautilus Solar Solutions | Sabattus, ME | 8 GWh | Sep 2023 | Dec 2025 | Solar |
| Sanford CGA | Nautilus Solar Solutions | Sanford, ME | 8 GWh | May 2022 | Dec 2025 | Solar |
| Sanford -NY | Nautilus Solar Solutions | Sanford, ME | 8 GWh | Jan 2024 | Dec 2025 | Solar |
| Shaker | Nautilus Solar Solutions | Gray, ME | 6 GWh | Jun 2022 | Dec 2025 | Solar |
| 700 Binnewater | Madison Energy Investments LLC | Rosendale, NY | 2 GWh | Aug 2022 | Dec 2025 | Solar |
| 665 Scenic Highway | Madison Energy Investments LLC | Bourne, MA | 89 MWh | Nov 2022 | Dec 2025 | Solar |
| Farmington | Madison Energy Investments LLC | Farmington, ME | 7 GWh | Nov 2023 | Dec 2025 | Solar |
| GSPP 7024 Fox Rd, LLC | Green Street Power Partners | Marcy, NY | 6 GWh | Apr 2023 | Dec 2025 | Solar |
| GSPP NESV, LLC | Green Street Power Partners | Attleboro, MA | 2 GWh | Feb 2023 | Dec 2025 | Solar |
| GSPP 4643 Twelve Corners Road, LLC | Green Street Power Partners | Auburn, NY | 8 GWh | May 2023 | Dec 2025 | Solar |
| GSPP 126 Little Bow Rd N, LLC | Green Street Power Partners | Gouverneur, NY | 7 GWh | Nov 2023 | Dec 2025 | Solar |
| GSPP 126 Little Bow Rd S, LLC | Green Street Power Partners | Gouverneur, NY | 7 GWh | Nov 2023 | Dec 2025 | Solar |
| Saratoga Solar III, LLC | Green Street Power Partners | Middle Grove, NY | 5 GWh | Nov 2023 | Dec 2025 | Solar |
| Saratoga Solar IV, LLC | Green Street Power Partners | Rock City Falls, NY | 5 GWh | Sep 2023 | Dec 2025 | Solar |
| Pulpit Hill | LSE Fornax LLC | Amherst, MA | 7 GWh | Jun 2019 | Dec 2025 | Solar |
| Sand Road | LSE Phoenix LLC | North Canaan, CT | 3 GWh | Oct 2021 | Dec 2025 | Solar |
| Norfolk Landfill Solar Project | NJR Clean Energy Ventures Corporation | Norfolk, CT | 6 GWh | Nov 2024 | Dec 2025 | Solar |
| Raffia Road Solar Project | NJR Clean Energy Ventures Corporation | Enfield, CT | 7 GWh | Nov 2024 | Dec 2025 | Solar |
| Brewer (CSG) | Nautilus Solar Solutions | Brewer, ME | 7 GWh | Jul 2024 | Dec 2025 | Solar |
| Sturbridge Barn | LSE Ara LLC | Charlton, MA | 2 GWh | May 2018 | Dec 2025 | Solar |
| Bunce | LSE Indus LLC | North Canaan, CT | 3 GWh | Mar 2022 | Dec 2025 | Solar |
| Valley Sun Solar | Valley Sun Solar LLC | Grand Isle, ME | 3 GWh | Nov 2024 | Dec 2025 | Solar |
| French Road Solar | SoCore Energy LLC | Ashland, ME | 3 GWh | Nov 2024 | Dec 2025 | Solar |
| Madawaska Solar | SoCore Energy LLC | Saint David, ME | 4 GWh | Nov 2024 | Dec 2025 | Solar |
| Caribou Solar | SoCore Energy LLC | Caribou, ME | 6 GWh | Nov 2024 | Dec 2025 | Solar |
| Jericho Gravel Solar Farm | SoCore Energy LLC | Jerico, VT | 2 GWh | Dec 2020 | Dec 2025 | Solar |
| Jericho Landfill Solar Farm | SoCore Energy LLC | Jerico, VT | 1 GWh | Dec 2020 | Dec 2025 | Solar |
| ME Fort Fairfield Solar Plant | ME Fort Fairfield LLC | Presque Isle, ME | 4 GWh | Nov 2024 | Dec 2025 | Solar |
| Ellington - 277 Sadds Mill | Onyx Asset Services Group | Ellington, CT | 4 GWh | Feb 2024 | Dec 2025 | Solar |
| Oak Leaf Solar XVII Community Solar | Navisun LLC | Pittsfield, MA | 47 MWh | Nov 2025 | Dec 2025 | Solar |
| Oak Leaf Solar XVI Community Solar | Navisun LLC | Pittsfield, MA | 10 MWh | Nov 2025 | Dec 2025 | Solar |
| BWC Jimmie Pond | Navisun LLC | Hampden, ME | 3 GWh | Nov 2024 | Dec 2025 | Solar |
| ISM Solar Shepherd Acres | Navisun LLC | South Paris, ME | 4 GWh | Nov 2024 | Dec 2025 | Solar |
| Southwick Solar, LLC Community Solar | Navisun LLC | Southwick, MA | 4 GWh | Apr 2025 | Dec 2025 | Solar |
| Augusta Road Bowdoin Solar, LLC | REA Investments, LLC | Bowdoin, ME | 5 GWh | Jan 2022 | Dec 2025 | Solar |
| Canton GLC Solar, LLC | REA Investments, LLC | Canton, ME | 5 GWh | Mar 2024 | Dec 2025 | Solar |
| Church Hill Road Augusta Solar, LLC | REA Investments, LLC | Augusta, ME | 7 GWh | Jan 2022 | Dec 2025 | Solar |
| Houlton Road Solar Farm (CSG) | REA Investments, LLC | Fort Fairfield, ME | 2 GWh | Nov 2024 | Dec 2025 | Solar |
| Plympton Lake Street Solar | REA Investments, LLC | Plympton, MA | 2 GWh | Nov 2022 | Dec 2025 | Solar |
| Mariaville Road Elsworth Solar, LLC | REA Investments, LLC | Ellsworth, ME | 1 GWh | Apr 2022 | Dec 2025 | Solar |
| Plympton Main Street Solar, LLC | REA Investments, LLC | Plympton, MA | 7 GWh | Nov 2023 | Dec 2025 | Solar |
| Market Street Gardiner Solar, LLC | REA Investments, LLC | Gardiner, ME | 6 GWh | Jun 2022 | Dec 2025 | Solar |
| North Nobleboro Road, LLC | REA Investments, LLC | Waldoboro, ME | 4 GWh | May 2021 | Dec 2025 | Solar |
| Nutting Ridge Solar, LLC | REA Investments, LLC | Otisfield, ME | 7 GWh | May 2023 | Dec 2025 | Solar |
| Perkins Road Belfast Solar, LLC | REA Investments, LLC | Belfast, ME | 9 GWh | May 2021 | Dec 2025 | Solar |
| Route 3 China Solar, LLC | REA Investments, LLC | China, ME | 8 GWh | Nov 2022 | Dec 2025 | Solar |
| Sheridan Road Solar Farm | REA Investments, LLC | Ashland, ME | 4 GWh | Jul 2024 | Dec 2025 | Solar |
| Skyway Avenue Solar Farm | REA Investments, LLC | Frenchville, ME | 3 GWh | Feb 2024 | Dec 2025 | Solar |
| Ward Solar 1, LLC | REA Investments, LLC | Carver, MA | 3 GWh | Jan 2019 | Dec 2025 | Solar |
| Amazon BDL4 | Telyon AMZ Windsor LLC | Windsor, CT | 4 GWh | Dec 2024 | Dec 2025 | Solar |
| Dairy Farm | Greenbacker Renewable Energy Corporation | Anson, ME | 6 GWh | Sep 2024 | Dec 2025 | Solar |
| Old Frontier Solar III | Old Frontier Solar III PV, LLC | South Deerfield, MA | 4 GWh | Aug 2022 | Dec 2025 | Solar |
| Benz Solar 1 | Ecos Energy LLC | Ansonia, CT | 1 GWh | Feb 2025 | Dec 2025 | Solar |
| Benz Solar 2 | Ecos Energy LLC | Ansonia, CT | 1 GWh | Feb 2025 | Dec 2025 | Solar |
| 118 Echo | Madison Energy Investments LLC | Mashpee, MA | 814 MWh | Jun 2023 | Dec 2025 | Solar |
| Lebanon CSG LLC | Dimension Energy LLC | Lebanon, ME | 6 GWh | Nov 2024 | Dec 2025 | Solar |
| 515 Main Saugus | 515 Main Saugus LLC | Saugus, MA | 2 GWh | Aug 2017 | Dec 2025 | Solar |
| Aegean Drive Solar | Aegean Drive Solar LLC | Methuen, MA | 2 GWh | Aug 2021 | Dec 2025 | Solar |
Surrounding Balancing Authorities
| Rank | Balancing Authority | Annual Net Generation | # Power Plants |
|---|---|---|---|
| #61 | Alcoa Power Generating, Inc. - Yadkin Division | 442.5 GWh | 4 |
| #24 | Dominion Energy South Carolina, Inc. | 25.3 TWh | 83 |
| #13 | Duke Energy Carolinas | 112.6 TWh | 577 |
| #17 | Duke Energy Progress East | 64.5 TWh | 565 |
| #50 | Duke Energy Progress West | 4.5 TWh | 15 |
| #23 | Louisville Gas and Electric Company and Kentucky Utilities Company | 33.9 TWh | 25 |
| #12 | New York Independent System Operator | 134.3 TWh | 1,299 |
| #1 | PJM Interconnection, LLC | 882.8 TWh | 2,652 |
| #31 | South Carolina Public Service Authority | 18.5 TWh | 35 |
| #59 | Southeastern Power Administration | 1.3 TWh | 11 |
Balancing Authorities with Similar Net Generation
| Rank | Balancing Authority | Annual Net Generation | # Power Plants |
|---|---|---|---|
| #7 | California Independent System Operator | 169.4 TWh | 2,135 |
| #9 | Tennessee Valley Authority | 163.4 TWh | 207 |
| #10 | Florida Power & Light Co. | 152.2 TWh | 187 |
| #12 | New York Independent System Operator | 134.3 TWh | 1,299 |
| #13 | Duke Energy Carolinas | 112.6 TWh | 577 |
| #15 | ISO New England | 111.1 TWh | 1,629 |
| #16 | Bonneville Power Administration | 91.6 TWh | 167 |
| #17 | Duke Energy Progress East | 64.5 TWh | 565 |
| #18 | PacifiCorp East | 60.9 TWh | 222 |
| #19 | Salt River Project Agricultural Improvement and Power District | 60.3 TWh | 49 |